Dental chair



FIG. 1 is a top plan view of a dental chair showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof; and

FIG. 6 is a perspective view thereof.

The side of the dental chair not shown is a mirror image of the side shown in FIG. 2. 

The ornamental design for a dental chair, substantially as shown and described. 